Method of simultaneously providing pin-shafts with heads of glass.



No. 658,457. Patented Sept. 25, I900. R. NEUSS; METHOD OF SIMULTANEOUSLY PROVIDING-PIN SHAFTS WITH HEADS 0F GLASS.

(Application filed June 11, 1900.)

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1 Inventor:

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permw Alforngy UNITED STATES PATENT OFFICE.

ROBERT NEUSS, OF AIX-LA-CHAPELLE, GERMANY.

METHOD OF SIMULTANEOUSLY PROVIDING PIN-SHAFTS WITH HEADS 0F GLASS.

SPECIFICATION forming part of Letters Patent No. 658,457, dated September 25, 1900.

Application filed June 11,- 1900.

To all whom it may concern.

Be it known that I, ROBERT NEUSS, manu= facturer of needles, a citizen of Germany, residing at 22 Krakaustrasse, AiX-la-Ohapelle, Kingdom of Prussia, Germany, have invented certain new and useful Improvements in Methods of Simultaneously Providing Pin- Shafts with Heads of Glass; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Heretofore it has been customary to provide each pin shaft separately with a head of glass, and the glass used thereby was taken from a rod of glass.

The object of my invention is to manipulate a greater number of pin-shafts simultaneously and provide them with heads of glass or of another vitreous mass, which is con tained in a trough and kept in a liquid state, whereby the process is greatly simplified and the production increased. To this end are all the pin-shafts to be simultaneously pro-' vided with heads placed in a row, somewhat like the teeth of a comb, in the jaws of a pair of tongs or a similar tool and the pin-shafts dipped into the liquid-bath of glass or another vitreous mass.

The accompanying drawing gives a perspective View of a device for the execution of the improved process.

The pin-shafts a are placed between the two plates 5 and c, of which the lower one b is provided with cross-grooves d, spaced to suit the required thickness of the glass heads and of less depth than the diameter of the pin-shafts. In these grooves the pin-shafts a are placed in such a manner that their ends project a suitable distance, and then the upper plate 0 is placed thereon. The plate c has a smooth surface and is intended to give to the pin-shafts a rotatory motion, which is essential to the formation of the glass heads. After the pin-shafts have been placed in the tool as described the ends-are dipped into the bath and the pin-shafts kept rotating until the heads are sufficiently formed and cooled ofi.

The construction and the operation of the tool is as follows: The lower plate 12 forms a S8I'lB.1N0-19,900, (N0 model.)

part of the lower'tool part with the handle whereas the upper part of the tool consists of the handle f and the branched portion g', movably connected by hinge h. are held together and pivoted by the screw t". In order to facilitate the insertion of the pinshafts and at the same time be able to exert a pressure upon the plate 0, the flat spring It is secured to the upper part of the tool just behind the hinge g, so that during the insertion of the pin-shafts the plate 0 may be lifted on, and when all the pin-shafts are put into position let it drop again, when it will be kept in contact with the pin-shafts through the influence of the spring. In order to impart the necessary rotation to the pin-shafts, the lower plate has been provided with guidepins Z and the upper plate a with suitable slots 'm to give the plate sufficient side play. The two circular ends n of the arms 0 of the part 9 work in grooves p of plate 0, whereby any motion imparted to the, handles e and f is transmitted to the plates 1) and c and by these to the pin-shafts, causing the latter to rotate. The spring q serves to open the handles of the tool when the pressure exerted thereon is removed.

The illustrated device is of course given only by way of example, as I am quite aware that other devices can be constructed and yet be within the scope of my invention, and do therefore not bind myself to this construction.

I claim The process of simultaneously providinga number of pin-shafts with heads of glass, which consists first, in arranging said pinshafts in a row, then dipping the blunt ends of the pin-shafts into a bath of liquid glass, and subsequently withdrawing them from said bath and rotating them until the headforming material is sufficiently cooled off.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

ROBERT NEUSS.

Witnesses:

- 0. E. BRUNDAGE,

Gr. Soon-r.

Both parts- 

